1275765673 has 32 divisors (see below), whose sum is σ = 1610219520. Its totient is φ = 983949120.

The previous prime is 1275765619. The next prime is 1275765683. The reversal of 1275765673 is 3765675721.

It is not a de Polignac number, because 1275765673 - 2¹³ = 1275757481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1275765613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 680928 + ... + 682798.

It is an arithmetic number, because the mean of its divisors is an integer number (50319360).

Almost surely, 2^1275765673 is an apocalyptic number.

1275765673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1275765673 is a deficient number, since it is larger than the sum of its proper divisors (334453847).

1275765673 is a wasteful number, since it uses less digits than its factorization.

1275765673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077.

The product of its digits is 1852200, while the sum is 49.

The square root of 1275765673 is about 35717.8621000754. The cubic root of 1275765673 is about 1084.5684602669.

The spelling of 1275765673 in words is "one billion, two hundred seventy-five million, seven hundred sixty-five thousand, six hundred seventy-three".